Re: [time-nuts] HP 10811-60165 Double Oven
In message 6B73B186D5BB46E497D773717A4A03D1@pc52, Tom Van Baak writes: Wonderfully, if you google for: HP 10811-60165 pinouts you get a bunch of time-nuts pages with the info you want. Isn't it high time we create a time-nuts wiki somewhere ? -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] A few questions about Tboltmon
Hi Bob, Yes I think they are definitely related.I have a suppressor in line but that didn't stop the surge but probably made it cause less damage than if it hadn't been there. The antenna was mounted on one of the plumbing vent pipes on the roof of my house. I have an Alpha Delta TransiTrap inline, which is bolted to an 8 foot ground rod. I have three 8 foot rods, all tied together and cad welded with a total of 250 feet of buried bare #6 which is also tied to the utility ground rod. Chris — Sent from Mailbox On Fri, Aug 14, 2015 at 7:30 AM, Bob Camp kb...@n1k.org wrote: Hi One might think that the dead antenna and blown GPSDO bias could be related…. One of the things that is probably worth repeating for the 100th time is the need for a proper lightning arrestor on your antenna line. Both the antenna and the GPSDO expect there to be a suppressor on the coax. It needs to properly ground the shield *and* clamp the center conductor to shield voltage. Oddly enough there are a lot of suitable arrestors on the auction sites. Even more oddly, they often show up as part of a “cell site GPSDO installation kit”. The arrestors can be had for $20. Last time I saw the kits cheap they listed at about $30. If you have ever been on a tower when a big cloud rolls over, you have heard the thing “buzz”. That’s a strong suggestion that it’s time to get back to the earth in a hurry. You don’t need to have a lightning strike to have significant DC sparking off an elevated object. If you can hear the discharges they are *plenty* strong enough to nuke a GPS antenna (if they discharge at the right point). Many antennas are designed with an internal DC short. If you look at a common low band VHF FM base antenna, it’s likely to be a Marconi self shorted design. Because we feed DC to a GPS antenna, they don’t have this sort of self protection. Depending on who designed the front end of your GPSDO, it may be pretty wide open as well. The tendency is to think about this stuff in terms of “I never get hit by lightning”. That’s generally true on any given day. I’ve had the house hit by lightning years ago. It’s probably not a good guess over a lifetime. I have big clouds roll over the house a few times a month in the summer. That’s a much more common thing. It does not destroy lots of stuff. It can make odd things happen with elevated structures…. Buy the arrestor. Spend the extra $15 and get a good one from a brand name you have heard of in relation to arrestors. Mount it as well as you can. Ground it as well as you can. The electrical code in your area probably has some rules about this sort of thing. They are well worth considering as well. Their objective is to keep your house from burning down. That’s a worthy goal…having your house burn down *and* finding that your insurance does not cover it could be a major bummer. Buy the arrestor …. Bob On Aug 13, 2015, at 9:57 PM, Chris Waldrup kd4...@gmail.com wrote: Thanks everyone. In addition to the blown transistor that feeds 5V down the coax, the one week out of box Motorola hockey puck antenna was blown too. I bought it in 2006 as a spare and I broke the shrink wrap two weeks ago. So I will order another spare but see if I can fix this spare. It's definitely worth it to have a few extras!!! Chris — Sent from Mailbox On Thu, Aug 13, 2015 at 8:01 PM, Magnus Danielson mag...@rubidium.dyndns.org wrote: Hi, On 08/08/2015 07:05 PM, Bob Camp wrote: Hi A factory reset will not brick the unit. Either: 1) Your TBolt is blown 2) The cable has an issue 3) The antenna has an issue. I've seen them all over the years, so neither is necessarily the most likely. I'd also add: 4) Power-issue 5) Serial cable problem For this case 1-3 should be your culprit. Oh, do remember that engineers invent the most complex scenarios of what the failure mode is, but fail to identify the simple ones such as power, cables and connectors failing. For troubleshooting this sort of thing, multiples of each are a handy thing to have. Baring that: 0) Put a DVM on the coax and see if you have bias to the antenna 1) Hook up a TDR to the cable and ring it out both with a load and a short on the end. 2) Put the antenna on a *very good* spectrum analyzer and look at what is coming out. 3) Grab a signal generator that will simulate a GPS constellation and drive the TBolt with that. Since nobody (other than Magnus) ever has the sort of gear for 1-3, and it’s all pricey stuff TDR is a nifty tool for this sort of thing so 1) is nice, but it won't really help you and you will have to know what to expect from a unpowered LNA. Spectrum analyzer will not directly help you since the satellite signal spectrum is below the noise-floor, but you *might* see the amplified noise as shaped by the LNA pre-filtering, which is hopefully SAW filtered,
[time-nuts] FW: More serial ports in NanoBSD
Thank you Mike for your tips but NanoBSD in my situation is a read only system because its stored on a flash card and copied in to RAM during the boot sequence. I don't see any UART in the boot messages. This the result of the # dmesg | grep -E ^sio[0-9] command. sio0 at port 0x3f8-0x3ff irq 4 flags 0x10 on isa0 sio0: type 16550A, console sio0: [FILTER] sio1 at port 0x2f8-0x2ff irq 3 on isa0 sio1: type 16550A sio1: [FILTER] These are the only on board available serial communication channels. Does have anyone else a useful tip? Thanks. Willy -Oorspronkelijk bericht- Van: Mike Cook [mailto:michael.c...@sfr.fr] Verzonden: donderdag 13 augustus 2015 23:14 Aan: willy.wille...@telenet.be Onderwerp: Fwd: [time-nuts] More serial ports in NanoBSD little correction. I don’t think you want hint.uart.3.disabled=1 for obvious reasons Début du message réexpédié : De: Mike Cook michael.c...@sfr.fr Objet: Rép : [time-nuts] More serial ports in NanoBSD Date: 13 août 2015 10:46:28 UTC+2 À: Discussion of precise time and frequency measurement time-nuts@febo.com Répondre à: Discussion of precise time and frequency measurement time-nuts@febo.com Le 12 août 2015 à 22:26, Willy Willemse willy.wille...@telenet.be a écrit : Hi all, I have a got a NanoBSD image with NTPns from Jason Rabel because I am a complete noob in FreeBSD, I tried to build an image but there were so many pitfalls for me that I asked Jason for a copy of his image. It works fine on my soekris NET4501, but I want also use the time signal from the DCF-77 transmitter not just the oncore signal. Therefore I bought an extra mini-PCI serial card (http://www.benl.ebay.be/itm/320524491709?_trksid=p2057872.m2749.l264 9 http://www.benl.ebay.be/itm/320524491709?_trksid=p2057872.m2749.l264 9ssPag eName=STRK%3AMEBIDX%3AIT ssPageName=STRK%3AMEBIDX%3AIT ) But the image doesn't support more than two serial ports. There is a way to add extra serial ports but this means that you have to build a new image. I find that a restriction on number hard to believe. The uart driver supports 16950s. I actually installed and tested an Oxford PCI card in one of my 4801s and was able to use them OK. I can’t find my documentation of that test. It was back in 2011. But IIRC…... Do your boot messages detect the hardware? You should see multiple «uartx » , 0 and 1 are the basic devices. Any others will be your PCI based ports. If they are seen, record the PORT and IRQ associated. In that case, go look at /boot/device.hints. See if you only uart.0 uart.1 then that may be your issue. Add entries for the others. ex. hint.uart.2.at=isa hint.uart.2.disabled=1 hint.uart.2.port=0x3E8 hint.uart.2.irq=5 hint.uart.3.at=isa hint.uart.3.disabled=1 hint.uart.3.port=0x2E8 hint.uart.3.irq=9 reboot Now, if you are lucky , when you look in /dev, you should see the tty and cua devices . Hope that helps. And that is what I can't do in this moment. The closest I found from education in this neighborhood is a Linux course which I now follow. My question is, if somebody from the Time-Nuts society have an image laying around which support a third and a fourth serial port? Or even better show me the way to update my existing image with the extra ports. Thanks. Willy --- Dit e-mailbericht is gecontroleerd op virussen met Avast antivirussoftware. https://www.avast.com/antivirus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. Ceux qui sont prêts à abandonner une liberté essentielle pour obtenir une petite et provisoire sécurité, ne méritent ni liberté ni sécurité. Benjimin Franklin ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. Ceux qui sont prêts à abandonner une liberté essentielle pour obtenir une petite et provisoire sécurité, ne méritent ni liberté ni sécurité. Benjimin Franklin --- Dit e-mailbericht is gecontroleerd op virussen met Avast antivirussoftware. https://www.avast.com/antivirus ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] A few questions about Tboltmon
Hi A surge suppressor designed to go into a medium to high power transmit line has to “hold off” firing for quite a bit before it trips. The suppressors that these GPSDO’s expect to see are more like “receive only” suppressors. They trip at much lower voltage levels than the higher power compatible gizmos. Huber Suhner 3403 series parts are one example of this type of suppressor. Poly Phaser makes similar parts. Indeed there is no magic solution that will protect against anything that ever comes along. At some point you can overwhelm any of these gizmos. In some cases they have cartridges that wear out. Bob On Aug 14, 2015, at 8:49 AM, Chris Waldrup kd4...@gmail.com wrote: Hi Bob, Yes I think they are definitely related.I have a suppressor in line but that didn't stop the surge but probably made it cause less damage than if it hadn't been there. The antenna was mounted on one of the plumbing vent pipes on the roof of my house. I have an Alpha Delta TransiTrap inline, which is bolted to an 8 foot ground rod. I have three 8 foot rods, all tied together and cad welded with a total of 250 feet of buried bare #6 which is also tied to the utility ground rod. Chris — Sent from Mailbox On Fri, Aug 14, 2015 at 7:30 AM, Bob Camp kb...@n1k.org wrote: Hi One might think that the dead antenna and blown GPSDO bias could be related…. One of the things that is probably worth repeating for the 100th time is the need for a proper lightning arrestor on your antenna line. Both the antenna and the GPSDO expect there to be a suppressor on the coax. It needs to properly ground the shield *and* clamp the center conductor to shield voltage. Oddly enough there are a lot of suitable arrestors on the auction sites. Even more oddly, they often show up as part of a “cell site GPSDO installation kit”. The arrestors can be had for $20. Last time I saw the kits cheap they listed at about $30. If you have ever been on a tower when a big cloud rolls over, you have heard the thing “buzz”. That’s a strong suggestion that it’s time to get back to the earth in a hurry. You don’t need to have a lightning strike to have significant DC sparking off an elevated object. If you can hear the discharges they are *plenty* strong enough to nuke a GPS antenna (if they discharge at the right point). Many antennas are designed with an internal DC short. If you look at a common low band VHF FM base antenna, it’s likely to be a Marconi self shorted design. Because we feed DC to a GPS antenna, they don’t have this sort of self protection. Depending on who designed the front end of your GPSDO, it may be pretty wide open as well. The tendency is to think about this stuff in terms of “I never get hit by lightning”. That’s generally true on any given day. I’ve had the house hit by lightning years ago. It’s probably not a good guess over a lifetime. I have big clouds roll over the house a few times a month in the summer. That’s a much more common thing. It does not destroy lots of stuff. It can make odd things happen with elevated structures…. Buy the arrestor. Spend the extra $15 and get a good one from a brand name you have heard of in relation to arrestors. Mount it as well as you can. Ground it as well as you can. The electrical code in your area probably has some rules about this sort of thing. They are well worth considering as well. Their objective is to keep your house from burning down. That’s a worthy goal…having your house burn down *and* finding that your insurance does not cover it could be a major bummer. Buy the arrestor …. Bob On Aug 13, 2015, at 9:57 PM, Chris Waldrup kd4...@gmail.com wrote: Thanks everyone. In addition to the blown transistor that feeds 5V down the coax, the one week out of box Motorola hockey puck antenna was blown too. I bought it in 2006 as a spare and I broke the shrink wrap two weeks ago. So I will order another spare but see if I can fix this spare. It's definitely worth it to have a few extras!!! Chris — Sent from Mailbox On Thu, Aug 13, 2015 at 8:01 PM, Magnus Danielson mag...@rubidium.dyndns.org wrote: Hi, On 08/08/2015 07:05 PM, Bob Camp wrote: Hi A factory reset will not brick the unit. Either: 1) Your TBolt is blown 2) The cable has an issue 3) The antenna has an issue. I've seen them all over the years, so neither is necessarily the most likely. I'd also add: 4) Power-issue 5) Serial cable problem For this case 1-3 should be your culprit. Oh, do remember that engineers invent the most complex scenarios of what the failure mode is, but fail to identify the simple ones such as power, cables and connectors failing. For troubleshooting this sort of thing, multiples of each are a handy thing to have. Baring that: 0) Put a DVM on the coax and see if you have bias to the antenna 1) Hook up a TDR to
Re: [time-nuts] More serial ports in NanoBSD
On 12/08/2015 22:26, Willy Willemse wrote: Hi, My question is, if somebody from the Time-Nuts society have an image laying around which support a third and a fourth serial port? The problem lies in the uart attachment, FreeBSD kernel needs some glue code to attach sio(4) driver to the minipci card serial ports. If the image has been built with phk's NTPns archives, NTPNS kernel configuration file should already include puc(4), the glue code for sio(4) pci attachment. It may be necessary to add support for the minipci card you bought in /usr/src/sys/dev/puc/pucdata.c (pciconf -lv should give the required information). I'm afraid I can't help more ATM, I'm facing an issue when trying to build a ntpns NanoBSD image on both 6.3-RELEASE 7.4-RELEASE FreeBSD boxes. ntpns linking fails with undefined references to math functions in libphk. Hope to solve these issues and bring back my spare 4501 to life as a ntp server... Éric ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] A few questions about Tboltmon
If anyone needs some if the Arrestors for outdoor GPS antennas with F connectors (Trimble Bullet antenna) ... I think ai still have some spares In my installation parts boxes. Love to trade for an N version (which I ran out of), or postage and offers. greg w9gb Sent from iPad Air ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] A few questions about Tboltmon
Hi The GPS RX arrestors are something that come up from time to time. They often have strange custom part numbers and very limited data. Sometimes the only practical way to figure out what’s what is to buy one and see. If it’s the right sort of unit once you check it out, the hope is that there are still some left. An awful lot of these went into cell towers and the install kits for them. The “give away” spec listed on the parts is often only that they cover the GPS band and not much else. The crazy thing is that often the enclosed instructions have a few details (often as cautions like “do not exceed 25V or 2W RF”) that let you know you have the right gizmo. I really can’t complain a lot about that. Since they are “nobody knows” sort of part they go for $20 and not $50. Bob On Aug 14, 2015, at 7:37 PM, Gregory Beat w...@icloud.com wrote: If anyone needs some if the Arrestors for outdoor GPS antennas with F connectors (Trimble Bullet antenna) ... I think ai still have some spares In my installation parts boxes. Love to trade for an N version (which I ran out of), or postage and offers. greg w9gb Sent from iPad Air ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] KS-24361 REF-0 standalone
All, I have posted some example code for running the REF-0 standalone. There is an Arduino sketch and some AVR C code. (Just in time for the weekend) http://syncchannel.blogspot.com/2015/08/example-code-for-ks-24361-ref-0.html I also did a quick write up recently about how I added the 10MHz test point output to my REF-1. That's on the blog as well if you are interested. Regards, Dan ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
Re: [time-nuts] A few questions about Tboltmon
Hi One might think that the dead antenna and blown GPSDO bias could be related…. One of the things that is probably worth repeating for the 100th time is the need for a proper lightning arrestor on your antenna line. Both the antenna and the GPSDO expect there to be a suppressor on the coax. It needs to properly ground the shield *and* clamp the center conductor to shield voltage. Oddly enough there are a lot of suitable arrestors on the auction sites. Even more oddly, they often show up as part of a “cell site GPSDO installation kit”. The arrestors can be had for $20. Last time I saw the kits cheap they listed at about $30. If you have ever been on a tower when a big cloud rolls over, you have heard the thing “buzz”. That’s a strong suggestion that it’s time to get back to the earth in a hurry. You don’t need to have a lightning strike to have significant DC sparking off an elevated object. If you can hear the discharges they are *plenty* strong enough to nuke a GPS antenna (if they discharge at the right point). Many antennas are designed with an internal DC short. If you look at a common low band VHF FM base antenna, it’s likely to be a Marconi self shorted design. Because we feed DC to a GPS antenna, they don’t have this sort of self protection. Depending on who designed the front end of your GPSDO, it may be pretty wide open as well. The tendency is to think about this stuff in terms of “I never get hit by lightning”. That’s generally true on any given day. I’ve had the house hit by lightning years ago. It’s probably not a good guess over a lifetime. I have big clouds roll over the house a few times a month in the summer. That’s a much more common thing. It does not destroy lots of stuff. It can make odd things happen with elevated structures…. Buy the arrestor. Spend the extra $15 and get a good one from a brand name you have heard of in relation to arrestors. Mount it as well as you can. Ground it as well as you can. The electrical code in your area probably has some rules about this sort of thing. They are well worth considering as well. Their objective is to keep your house from burning down. That’s a worthy goal…having your house burn down *and* finding that your insurance does not cover it could be a major bummer. Buy the arrestor …. Bob On Aug 13, 2015, at 9:57 PM, Chris Waldrup kd4...@gmail.com wrote: Thanks everyone. In addition to the blown transistor that feeds 5V down the coax, the one week out of box Motorola hockey puck antenna was blown too. I bought it in 2006 as a spare and I broke the shrink wrap two weeks ago. So I will order another spare but see if I can fix this spare. It's definitely worth it to have a few extras!!! Chris — Sent from Mailbox On Thu, Aug 13, 2015 at 8:01 PM, Magnus Danielson mag...@rubidium.dyndns.org wrote: Hi, On 08/08/2015 07:05 PM, Bob Camp wrote: Hi A factory reset will not brick the unit. Either: 1) Your TBolt is blown 2) The cable has an issue 3) The antenna has an issue. I've seen them all over the years, so neither is necessarily the most likely. I'd also add: 4) Power-issue 5) Serial cable problem For this case 1-3 should be your culprit. Oh, do remember that engineers invent the most complex scenarios of what the failure mode is, but fail to identify the simple ones such as power, cables and connectors failing. For troubleshooting this sort of thing, multiples of each are a handy thing to have. Baring that: 0) Put a DVM on the coax and see if you have bias to the antenna 1) Hook up a TDR to the cable and ring it out both with a load and a short on the end. 2) Put the antenna on a *very good* spectrum analyzer and look at what is coming out. 3) Grab a signal generator that will simulate a GPS constellation and drive the TBolt with that. Since nobody (other than Magnus) ever has the sort of gear for 1-3, and it’s all pricey stuff TDR is a nifty tool for this sort of thing so 1) is nice, but it won't really help you and you will have to know what to expect from a unpowered LNA. Spectrum analyzer will not directly help you since the satellite signal spectrum is below the noise-floor, but you *might* see the amplified noise as shaped by the LNA pre-filtering, which is hopefully SAW filtered, so 2 is doable but tricky to interpret for the novice. If you have a constellation simulator lying around, it will help you to see if the receiver is working at all, but even I don't have that... Having a VNA helps, and the nifty TinyVNA for instance will be quite useful. Similar to the TDR, it sends a signal up the wire and analyze the response, but in frequency plane rather than time-plane. Again, some experience is required but this is a good time to learn. the simple answer is: 1) The antenna is probably the cheapest part of the setup. I’d swap it out first. 2) The cable is cheap but a pain to run, is it #2 or #3.
